DEVICE FOR 3D IMAGING OF THE DEFORMATION STATE OF THE SURFACE OF A MATERIAL IN THE ELASTIC REGION

The invention relates to devices for determining the elastic properties of materials by pressing a micro-indenter into the surface of a sample to a given depth in the elastic region. The technical result is that of increasing the technological capabilities of an x-ray microtomograph by allowing imag...

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Hauptverfasser: AJZIKOVICH, Sergej Mikhajlovich, SUKIYAZOV, Aleksandr Gurgenovich, ZELENTSOV, Vladimir Borisovich, NIKOLAEV, Andrej Leonidovich, SADYRIN, Evgenyij Valer'evich
Format: Patent
Sprache:eng ; fre ; rus
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Zusammenfassung:The invention relates to devices for determining the elastic properties of materials by pressing a micro-indenter into the surface of a sample to a given depth in the elastic region. The technical result is that of increasing the technological capabilities of an x-ray microtomograph by allowing imaging of the deformation state of a material without interruption to the application of force, and improving the resolution. The essence of the invention is that a device for 3D imaging of the deformed state of the surface of a material in the elastic region is additionally provided with a special assembly comprising the following axially aligned components: a length of cylindrical tube made of a material that is transparent to x-rays, a micro-indenter, and a device for the linear movement of said micro-indenter. Further, a mechanical force loading unit in the form of a graduated micrometer is coupled to the device for the linear movement of the micro-indenter, and said components are secured to the upper end face of the cylindrical tube, outside of said tube, and the lower end of the tube is connected by a screw connection to a seat for fastening the special assembly to a goniometric stage. In addition, in order to increase the resolution, the distance between a source and a detector of x-ray radiation is selected as equal to 30 ± 5 mm, and the goniometric stage, together with the special assembly, is disposed in the middle between the source and the detector of x-ray radiation. L'invention concerne des dispositifs permettant de déterminer les propriétés élastiques de matériaux en pressant un micro-indenteur dans la surface d'un échantillon à une profondeur donnée dans la zone des déformations élastiques. Le résultat technique consiste en une augmentation des capacités industrielles de micro-tomographie par rayon X consistant en une visualisation de l'état de déformation du matériau sans interrompre l'action de force, et en une augmentation de la capacité de résolution. L'invention consiste essentiellement en un dispositif de visualisation 3D de l'état de déformation de la surface d'un matériau dans une région de déformations élastiques, lequel comprend une unité spéciale comprenant, disposés coaxialement, un segment de tube cylindrique fait d'un matériau transparent aux rayons X, un micro-indenteur et un dispositif de déplacement linéaire du micro-indenteur; une unité mécanique d'application de force se présente sous forme d'une vis micrométrique avec des divisi